Specifications include, but are not limited to: The purchase of up to 53 2017 model school buses of various passenger sizes, some with air conditioning, and some with lifts designed for special education, which have open certificates of origin. Chassis: - In-line, six-cylinder diesel engines for all buses except Units 38-40, 50-51, 53. - Units 38-40, 50-51, 53 (Propane) shall have tanks with a minimum usable capacity of 67 gallons. - One spare rim shall be provided - Tires – 10R22.5 on 36-72 passenger (not on flat floor buses) and 245x70R225 or 255x70R225 on flat floor buses and 11R22.5 on 84 passenger buses. - Tire Treads- Steering tread on front tires and mud and snow tread on rear tires. - Wheels shall be balanced - All buses shall have front-end alignments
